Evolution is ultimately why cancer is so deadly. Take two biopsies from different sides of a tumor, and they can be genetically very different, making it that much harder to fight. Variation is the toolbox of evolution, and this variation gives cancer strength.

What we observe as material bodies and forces are nothing but shapes and variations in the structure of space.

Poetry can unleash a terrible fear. I suppose it is the fear of possibilities, too many possibilities, each with its own endless set of variations... With basketball, you can correct your own mistakes, immediately and beautifully, in midair.

An aria in an opera - Handel's 'Ombra mai fu,' for example - gets along with an incredibly small number of words and ideas and a large amount of variation and repetition. That's the beauty of it. It's not taxing to the listener's intelligence because if you haven't heard it the first time round, it'll come around again.

Even the once simple home mortgage now has so many flavors and styles and variations that it is difficult for people to make a decision.

The man of the future may, and even must, do things impossible in the past and acquire new motor variations not given by heredity.

I think the future of lunar bases has to be somewhere around the South or North Pole. You have less variation in temperature and more daylight hours.

Every man must have the right fearlessly to think independently and express his opinion about what he knows, what he has personally thought about and experienced, and not merely to express with slightly different variations the opinion which has been inculcated in him.

Regularity in the hours of rising and retiring, perseverance in exercise, adaptation of dress to the variations of climate, simple and nutritious aliment, and temperance in all things are necessary branches of the regimen of health.

I want to live and feel all the shades, tones, and variations of mental and physical experience possible in my life. And I am horribly limited.

The Moon stabilizes Earth's obliquity. Well, almost. The tilt actually varies between 22 and 24.5 degrees - and the variation is enough to induce such environmental inconveniences as the occasional ice age. Without the Moon, it might be much worse.

Whatever they do, criminals and non-criminals act in particular ways. Some writers, for instance, use computers, others pen and paper. Some write in the morning, some at night. Each writer has a distinct style, with variations in grammar, sentence structure, and voice.

The future of design is a future where anything material in the environment - whether it's wearables, cars, buildings - can be designed with this variation of properties and relationship with the environment that can take part in the natural ecology.

In the US, there is basically one party - the business party. It has two factions, called Democrats and Republicans, which are somewhat different but carry out variations on the same policies. By and large, I am opposed to those policies. As is most of the population.

Research shows that there is only half as much variation in student achievement between schools as there is among classrooms in the same school. If you want your child to get the best education possible, it is actually more important to get him assigned to a great teacher than to a great school.

Poetry can unleash a terrible fear. I suppose it is the fear of possibilities, too many possibilities, each with its own endless set of variations. It's like looking too closely and too long into a mirror; soon your features distort, then erupt. You look too closely into your poems, or listen too closely to them as they arrive in whispers, and the features inside you - call it heart, call it mind, call it soul - accelerate out of control. They distort and they erupt, and it is one strange pain. You realize, then, that you can't attempt breaking down too many barriers in too short a time, because there are as many horrors waiting to get in at you as there are parts of yourself pushing to break out, and with the same, or more, fevered determination.

Those who do not seek Wisdom do not see Wisdom, even when she passes them by; they see only that which appeals to their lusts: and this substitute becomes their variation of Wisdom.

Each mind conceives God in its own way. There may be as many variation of the God figure as there are people in the world

I can never read all the books I want; I can never be all the people I want and live all the lives I want. I can never train myself in all the skills I want. And why do I want? I want to live and feel all the shades, tones and variations of mental and physical experience possible in my life. And I am horribly limited.

It's bullshit to think of friendship and romance as being different. They're not. They're just variations of the same love. Variations of the same desire to be close.

I want to establish a wide range and play all kinds of parts. It's that sort of acting career I really respect. I like to turn a sharp left from whatever I've done before because that keeps me awake. That's why I want to be an actor - I don't want to play endless variations on one character.

Regularity in the hours of rising and retiring perseverance in exercise adaptation of dress to the variations of climate simple and nutritious aliment and temperance in all things are necessary branches of the regimen of health.

In the US there is basically one party - the business party. It has two factions called Democrats and Republicans which are somewhat different but carry out variations on the same policies. By and large I am opposed to those policies. As is most of the population.

In my cranky old age I actually prefer recording alone now on 'The Simpsons ' for example because I find that the director can just focus on what I'm doing and I can do a lot of variations. A lot of times when I record with a group I'll stay after class for another hour or two.